package daily;

import java.util.*;

class Solution721 {

    private static final List<List<String>> ACCOUNT_LIST =
            List.of(List.of("John","johnsmith@mail.com","john_newyork@mail.com"), List.of("John", "johnsmith@mail.com", "john00@mail.com"), List.of("Mary", "mary@mail.com"), List.of("John", "johnnybravo@mail.com"));

    public static void main(String[] args) {
        Solution721 solution = new Solution721();
        List<List<String>> result = solution.accountsMerge(ACCOUNT_LIST);
        System.out.println(result);
    }

    public List<List<String>> accountsMerge(List<List<String>> accounts) {

        return List.of();
    }
}
